Patents by Inventor Walter Knoss

Walter Knoss has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5529746
    Abstract: The invention relates to a process for pressing electrically conductive powders to high-density compacts in dimensionally stable pressing molds, whereby the achievable compression density is greater than 96% and, in many cases, amounts to almost 100% of the theoretical density of suitable materials. For said purpose, static pressing of the powders according to conventional methods is superimposed by a second process step, in which from 1 to 3 electric current pulses of from 5.times.10.sup.-5 to 5.times.10.sup.-2 s duration and high electric power are applied to the punches of the press. As opposed to known methods, no notable sintering of powder of particles occurs in such process. The process is especially suitable for the manufacture of high-density and high-strength, sintered mass-produced components, where compacts are produced on automatic presses with high cycle frequencies.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: June 25, 1996
    Inventors: Walter Knoss, Manfred Schlemmer